Curle, A. O. (1912) “Account of the Examination of a Relic Bed on the Mote of Ingleston, Kelton Parish, Kirkcudbright, from which was recovered a Padlock of tubular form; and a Note of similar Padlocks preserved in the National Museum of Antiquities”, Proceedings of the Society of Antiquaries of Scotland, 46, pp. 189–200. doi: 10.9750/PSAS.046.189.200.